Catalytic oxidation of 3,3-dimethyl-2-hydroxybutyric acid to 2-oxo acid and preparation of 4-amino-6-tert.-butyl-3-thio-1,2,4-triazine-5(4-H)-one
US4614822A · kind A · utility
3Cited by
4References
8Claims
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Key dates
| Filing date | Aug 26, 1980 |
| Grant date | Sep 30, 1986 |
| Priority date | — |
| Expiry date | Aug 26, 2000 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C51/373
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Sodium 3,3-dimethyl-2-hydroxybutyrate and ruthenium dioxide hydrate are added to water, the pH rendered alkaline, and sodium hypochlorite is slowly added to produce sodium 3,3-dimethyl-2-oxobutyrate in high yield and purity. The solid catalyst is filtered off and may be re-used while the filtrate can be directly used in further synthesis.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.